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Chhattisgarh PMT Chhattisgarh PMT Solved Paper-2011

  • question_answer
    A ray passes through a prism of angle \[60{}^\circ C\] in minimum deviation position and suffers a deviation of \[30{}^\circ \]. What is the angle of incidence on the prism?

    A) \[30{}^\circ \]

    B) \[45{}^\circ \]

    C) \[60{}^\circ \]

    D) \[90{}^\circ \]

    Correct Answer: B

    Solution :

    In condition of minimum deviation incident angle \[i=\frac{A+{{\delta }_{m}}}{2}=\frac{{{60}^{o}}+{{30}^{o}}}{2}={{45}^{o}}\]


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